I am considering buying the Fire HD 7", and these look like good, inexpensive wireless headphones. I've never used a BT device before. Do I need to purchase anything else to get it to work with the Fire HD? How does the Fire HD recognize the headphones? One last, probably REALLY dumb, question: the recharge cable for the headphones is USB-based - so I'd need a PC to recharge? (or USB-to-A/C adapter)?

I think that I'm starting to feel my age creep up

Please PM me with the answers if it is too basic (or off-topic) for this thread.
Thanks so much!